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Objective A method for simultaneous determination of MBAA, DBAA, DCAA, TCAA and ${\mathrm{{ClO}}}_{2}{}^{- }$ in drinking water was established by ion chromatography. Methods The water samples were determined by ${0.22\mu}\mathrm{m}$ qeuosystem filter membrane with a volume of ${500\mu }\mathrm{L}$ . The samples were rinsed with $\mathrm{{KOH}}$ solution gradient and separated by IonPac AS19 anion column. The column temperature was set at ${30}^{\circ }\mathrm{C}$ , and the current of the inhibitor was ${75}\mathrm{\;{mA}}$ . Results The results showed that the linearity ranges of ${\mathrm{{ClO}}}_{2}{}^{- }$ , MBAA, DBAA, DCAA and TCAA were found in the range of ${10}\sim {1000\mu}\mathrm{g}/\mathrm{L},\mathrm{r}> {0.9990}$ , with detection limits $\left({3\mathrm{\;S}/\mathrm{N}}\right)$ of ${0.32},{0.76},{1.30},{0.69},{1.58\mu}\mathrm{g}/\mathrm{L}$ . The standard recoveries were ${80}\%\sim {110}\%$ and RSD (n=6) of the determined values were all less than 5.0%. Conclusion The method was simple, sensitive, can meet the detection requirements of four kinds of Haloaeetic Acids and Chlorite in drinking water. The method can be used for the determination of kour kinds of haloaeetic acids and chlorite in drinking water.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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